[CHINA YUCHAI INTERNATIONAL TO ANNOUNCE - Earningsll to Begin at 8:00 A.M. EDT - Singapore, Singapore July30, 2012 http://www.cyilimited.com Forl other interested parties, a simultaneous webcastn be accessed at the investor relations section of thempanys website located atout China Yuchai International http://www.cyilimited.com China Yuchai International Limited, through its subsidiary, Guangxi Yuchai Machinerympany Limited (GYMCL), engages]